Abstract
Amorphous thin poly(bisphenol A carbonate) films are prepared on Si, SiO2, GaAs, and spin cast polycarbonate substrates by condensation from vapor. Surface morphologies are investigated using scanning force microscopy with focus on the substrate-film interface formation. Except for polycarbonate substrates, where smooth surfaces are observed for all film thicknesses, a change from rough discontinuous surfaces for very thin films to smooth homogeneous surfaces for thicker films appears due to dewetting effects. Utilizing Fourier transform infrared spectroscopy, size-exclusion chromatography, and mass spectrometry, we find that the bond topology stays mostly intact during evaporation, while the molecular weight as well as the chain length is reduced.
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